Finding the Fourth Proportional to 129,489,931.20, 194,234,896.80 and 129,489,931.20
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Solution
The fourth proportional to 129,489,931.20, 194,234,896.80 and 129,489,931.20 is: 194,234,896.80
Step by Step Solution
- Step 1: Write the proportion equation
129,489,931.20 : 194,234,896.80 = 129,489,931.20 : x - Step 2: Convert to fraction form
129,489,931.20/194,234,896.80 = 129,489,931.20/x - Step 3: Cross multiply
129,489,931.20x = 194,234,896.80 × 129,489,931.20 - Step 4: Simplify right side
129,489,931.20x = 25,151,463,423,271,104 - Step 5: Solve for x
x = 25,151,463,423,271,104/129,489,931.20 - Step 6: Final answer
x = 194,234,896.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.